CHFXK-LIST OF COLORADO BIRDS 333 



528. Redpoll. Acanthis linaria. Common winter resi- 

 dent ; lives from plains to 10,()()0 feet. 



528b. Greater redpoll. Acanthis linaria rostrata. 

 Rare or accidental winter visitor ; one record. 



529. American goldfinch. Astragalinus tristis. Resi- 

 dent ; quite common in sunmier ; sometimes reaches 

 10,000 feet. 



529a. Western goldfinch. Astragalinus tristis pal- 

 LiDUS. Migrant; probably common ; added by Mr. Aiken. 



530. Arkansas goldfinch. Astragalinus psaltria. 

 Common summer resident ; breeds from plains to over 

 9,000 feet. 



530a. Arizona goldfinch. Astragalinus psaltria Ari- 

 zona. Summer resident ; not common. 



530b. Mexican goldfinch. Astragalinus psaltria mexi- 

 canus. Rare, but believed to be a summer resident at 

 Trinidad. 



533. Pine siskin. Spinus pinus. Common resident ; 

 breeding range from plains to timber-line. 



000. English sparrow. Passer domesticus. Rapidly 

 increasing in numbers ; has settled at points west of the 



range. 



534-. Snowflake. Passerina nivalis. Rare winter vis- 

 itor ; one record west of the range ; several east. 



536a. Alaskan longspur. Calcarius lapponicus alas- 

 CENSis. Common winter resident ; breeds far north. 



538. Chestnut-collared longspur. Calcarius ornatus. 

 Rare summer resident; winter resident, not common; 

 common in migration. 



539. McCown's longspur. Rhyncophanes mccownii. 

 Common winter resident, dwelling on the plains. 



